- 1Draft notation of the Difference Engine No. 2 (BAB/J)
1846 - 1849 February 12, series - 2The first drawing of the circular arrangement of the new engine (BAB/A/001)
1834 September, item - 3Untitled. This drawing is a cardboard model. (BAB/A/002)
1834 September, item - 4Sketch of a plan for reserving the carriages. (BAB/A/003)
1834 October 9, item - 5Plan of Difference Engine No. 2. Tracing of BAB A/164. (BAB/B/002)
?1847-1848, item - 6Difference Engine No. 2. Addition carriage and mode of driving the axis. Tracing of BAB A/171. (BAB/B/003)
?1847-1848, item - 7Digit counting apparatus upon axes of the left hand group of Plan 28. Plan, description and notation. (BAB/C/117)
1843 June 29, item - 8Axes D1, E1 for the left hand group of Plan 28 (BAB/C/120)
1843, item - 9Analytical Engine. Sheet No. 1. Sections of store wheels and their framing selectors. (BAB/D/001)
1857 June 6, item - 10Digit counting apparatus on the two upper wheel selectors. (BAB/D/002)
1857 October, item - 11Carriage with tens warning. Sheet 3. (BAB/D/003)
1857 September 2, item - 12Rough draft of Universal Machine Tool. Designed and employed for obtaining the different motions. (BAB/E/001)
1857 June 15, item - 13Rough draft of throw out motion for feed apparatus. (BAB/E/002)
1857 July, item - 14Experimental planing machine (BAB/E/003)
1858 February, item - 15Multiplication before the invention of multiplication by table. Sheet 1 of 2. (BAB/F/001)
undated [1835], item
